Asus P4P800-X P4P800-X user's manual English version E1718 - Page 23

1.8 Expansion slots To install and configure an expansion card: 1. Install an expansion card following the instructions that came with the chassis. 2. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for BIOS information. 3. Assign an IRQ to the card. Refer to the tables next page. 4. Install the drivers and/or software applications for the expansion card according to the card documentation. 1.8.1 Standard interrupt assignments IRQ Priority Standard Function 0 1 System Timer 1 2 Keyboard Controller 2 N/A Programmable Interrupt 3* 11 IRQ holder for PCI steering 4* 12 Communications Port (COM1) 5* 13 IRQ holder for PCI steering 6 14 Floppy Disk Controller 7* 15 Printer Port (LPT1) 8 3 System CMOS/Real Time Clock 9* 4 IRQ holder for PCI steering 10* 5 IRQ holder for PCI steering 11* 6 IRQ holder for PCI steering 12* 7 PS/2 Compatible Mouse Port 13 8 Numeric Data Processor 14* 9 Primary IDE Channel 15* 10 Secondary IDE Channel * These IRQs are usually available for ISA or PCI devices. 1.8.2 IRQ assignments for this motherboard AB PCI slot 1 -- PCI slot 2 -- PCI slot 3 -- PCI slot 4 -- PCI slot 5 -- AGP slot used - Onboard USB 1.1/2.0 controller - - Onboard LAN -- Onboard Audio -- C used D E F GH - - shared - - - - - shared - - - - - shared - shared - - - - - shared - - - - - -- - shared shared shared shared - - - shared - - - - -- When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable. ASUS P4P800-X motherboard 1-13